Reaction Quotient and Le Chatelier's Principle

AP Chemistry· difficulty 4/5

For Fe³⁺ + SCN⁻ ⇌ FeSCN²⁺ (red), adding solid NaSCN

A
$No change$
B
$Increases red color$
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C
$Decreases red color$
D
$Decomposes complex$

Explanation

Adding SCN⁻ shifts forward \to more red FeSCN²⁺.

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